--- product_id: 386637054 title: "– 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps" brand: "mars hydro" price: "1245 zł" currency: PLN in_stock: true reviews_count: 11 category: "Mars Hydro" url: https://www.desertcart.pl/products/386637054-4-inch-inline-fan-and-filter-with-temperature-and-humidity store_origin: PL region: Poland --- # 205 CFM airflow 28 dB ultra-quiet Temp & humidity control – 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps **Brand:** mars hydro **Price:** 1245 zł **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your grow game with silent, smart airflow mastery! ## Quick Answers - **What is this?** – 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps by mars hydro - **How much does it cost?** 1245 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/386637054-4-inch-inline-fan-and-filter-with-temperature-and-humidity) ## Best For - mars hydro enthusiasts ## Why This Product - Trusted mars hydro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Powerful Airflow:** Delivers a robust 205 cubic feet per minute to ensure optimal ventilation and cooling in hydroponic grow rooms or AV closets. - • **Whisper-Quiet Operation:** Durable plastic housing and dual ball bearings keep noise at a minimal 28 dB—perfect for discreet, professional grow setups. - • **Complete Ventilation Kit:** Includes 4” inline fan, carbon filter, 33 ft flex ducting, and 3 duct clamps—everything you need for a turnkey airflow solution. - • **Precision Climate Control:** Intelligent digital controller programs temperature, humidity, fan speed, timer, and alarms for flawless environment management. - • **Effortless Installation & Maintenance:** Removable duct ends with locking tabs and 4.9 ft cord length make setup and upkeep hassle-free and fast. ## Overview The MARS HYDRO 4 Inch Inline Fan and Filter kit combines a high-performance 205 CFM exhaust fan with an intelligent temperature and humidity controller, ultra-quiet 28 dB operation, and a carbon filter. Designed for hydroponic grow rooms and AV closets, it offers programmable climate control, easy installation, and comprehensive ventilation accessories for a professional-grade environment. ## Description Versatile inline fan and filter system with intelligent temperature and humidity control, providing effective ventilation and cooling for various applications. Review: Brilliant product - Excellent service, brilliant product well worth the money Review: Mars hydro - Great product ## Features - Grow Tent Fan: Designed to ventilate hydroponic grow rooms, transfer heating/cooling, circulate air, and cool AV closets. - Multifunction: Ventilation Exhaust Fan with Intelligent Temperature Humidity Controller programming, fan speed control, timer, and alarm system, More Effective ventilation for your planting - Low Noise Level: Durable plastic fan housing and blades for extremely low noise(28 dB), create a truly quiet growth environment. - Easy Installation: Removable duct ends with locking tabs for quick removal and easy maintenance and a cord length of 4.9 feet for hassle free setup. - Ventilation Exhaust Fan Size: 4” | Dimensions: 11.9 x 8 x 7.4 in. | Weight: 4lb. | Airflow: 205 CFM | Noise: 28 dBA | Bearings: Dual Ball ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08RZ3WH7N | | Air Flow Capacity | 205 Cubic Feet Per Minute | | Best Sellers Rank | 16,080 in Garden ( See Top 100 in Garden ) 4 in Hydroponic Ventilation Equipment | | Brand Name | MARS HYDRO | | Collection Name | Inline Fans | | Colour | Black | | Control Method | Push Button | | Country of Origin | China | | Customer Reviews | 4.2 4.2 out of 5 stars (231) | | Electric Fan Design | Exhaust Fan | | Finish Type | Powder Coated | | Included Components | 4 inch inline duct fan, digital controller, carbon filter, 25 feet flex ducting, 3 duct clamps | | Indoor Outdoor Usage | Indoor | | Is Product Cordless | No | | Item Weight | 1.81 Kilograms | | Manufacturer | MARS HYDRO | | Material | Plastic | | Model Name | 4 inch inline fan kit-CP | | Model Number | 4 inch inline fan kit-CP | | Mounting Type | Clip-on/Clamp Mount | | Noise Level | 28 Decibels | | Number of Power Levels | 1 | | Power Source | Corded Electric | | Special Features | Digital controller with temperature and humidity programming, speed control, timer and alarm system | | Speed | 2600 RPM | | Standby Power Shutoff | High | | Style | Carbon Filter | | Unit Count | 1 count | | Voltage | 12 Volts | | Wattage | 50 watts | ## Product Details - **Brand:** MARS HYDRO - **Colour:** Black - **Electric fan design:** Exhaust Fan - **Material:** Plastic - **Mounting type:** Clip-on/Clamp Mount - **Noise level:** 28 Decibels - **Power source:** Corded Electric - **Special feature:** Digital controller with temperature and humidity programming, speed control, timer and alarm system - **Style:** Carbon Filter - **Wattage:** 50 watts ## Images ![– 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps - Image 1](https://m.media-amazon.com/images/I/710a4lc94IL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Does it come with an UK Plug?** A: Yes, it is UK Plug. **Q: Are other MARS products also UK plugs?** A: Yes, all MARS HYDRO products are UK plugs. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Brilliant product *by G***N on 28 March 2026* Excellent service, brilliant product well worth the money ### ⭐⭐⭐⭐⭐ Mars hydro *by A***T on 6 March 2026* Great product ### ⭐⭐⭐⭐⭐ Great *by L***M on 30 September 2025* Can’t fault it. Easy to use and setup. I’ve had mine on 24/7 for 4 month now. Still no issues ## Frequently Bought Together - MARS HYDRO 4 Inch Inline Fan and Filter, with Temperature and Humidity Controller, and 25 Feet Ducting, Exhaust Fan for Grow Tents, Hydroponics - MARS HYDRO TS1000 150W LED Grow Light for Indoor Plants, with Patented Reflector, 5 Levels Dimmable Lights Daisy Chain Full Spectrum Growing Lamps for Seedlings Veg Bloom in 2x2/3x3 Grow Tent --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/386637054-4-inch-inline-fan-and-filter-with-temperature-and-humidity](https://www.desertcart.pl/products/386637054-4-inch-inline-fan-and-filter-with-temperature-and-humidity) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-25*